package me.ereach.set;

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Set<String> set1 = new HashSet<>(Arrays.asList("a", "b", "c"));
        Set<String> set2 = new HashSet<>(Arrays.asList("b", "c", "d"));

        set1.removeAll(set2);

        System.out.println(set1);
    }
}
